How does TCP multiplexing and demultiplexing work?

Transport layer gathers chunks of data it receives from different sockets and encapsulate them with transport headers. Passing these resulting segments to the network layer is called multiplexing. The reverse process which is delivering data to the correct socket by the transport layer is called demultiplexing.

How does TCP use multiplexing?

TCP provides multiplexing facilities by using source and destination port numbers. These port numbers allow TCP to set up a number of virtual connections over a physical connnection and multiplex the data stream through that connection.

What is multiplexing and demultiplexing with example?

A Multiplexer is a circuit that accept many inputs but gives only one output. A Demultiplexer functions exactly in the reverse way of a multiplexer i.e., a demultiplexer accepts only one input and gives many outputs.

Why is multiplexing an important role in TCP IP?

Key Concept: TCP/IP is designed to allow many different applications to send and receive data simultaneously using the same Internet Protocol software on a given device. To accomplish this it is necessary to multiplex transmitted data from many sources as it is passed down to the IP layer.

What do you mean by demultiplexing?

Demultiplexing (Demuxing) is a term relative to multiplexing. It is the reverse of the multiplexing process. Demultiplex is a process reconverting a signal containing multiple analog or digital signal streams back into the original separate and unrelated signals.

What is the purpose of demultiplexing?

The function of the Demultiplexer is to switch one common data input line to any one of the 4 output data lines A to D in our example above. As with the multiplexer the individual solid state switches are selected by the binary input address code on the output select pins “a” and “b” as shown.

Why is multiplexing and demultiplexing needed in network?

Multiplexing and demultiplexing extend host-to-host delivery services available on the network layer to process-to-process services at the application layer [1]. Multiplexing packages data segments on the sender-side, and demultiplexing unpackages those segments at the receiving-side.

How demultiplexing is carried out using TCP and UDP?

Multiplexing and Demultiplexing services are provided in almost every protocol architecture ever designed. UDP and TCP perform the demultiplexing and multiplexing jobs by including two special fields in the segment headers: the source port number field and the destination port number field.

What is the need of demultiplexing in microprocessor?

As AD7-AD0 lines serve a dual purpose they have to be demultiplexed to get all the information. The address’s high order bits remain on the bus for 3 clock periods. An external latch is used to save the value of AD7-AD0 when it is carrying the address bits so that the entire address remains for the 3 clock cycles.

What is the concept of demultiplexing?